By conserving energy, using efficient light bulbs (just to name a few)
100
What is the first layer of earth's atmosphere called?
Troposphere
100
Who discovered nacreous clouds?
Henrik Mohn
100
What is the first step in the water cycle?
Evaporation
100
What does climate change mean?
Change in climate (or global warming)
200
What effect does carbon monoxide have on the atmosphere?
It causes air pollution
200
For what reason does the ozone layer exist?
To protect the earth from powerful and dangerous Ultra-Violet rays (UV)
200
How many types of clouds are there?
Ten
200
Name the different stages in the water cycle.
Evaporation, Condensation, Precipitation
200
What is absolute humidity?
How much water could be in the air
300
Why does the ozone layer have a hole in it?
Because of air pollution
300
In which layer does the ozone layer appear in?
Stratosphere
300
Name one of the clouds that is lowest to the ground.
Either Stratus,Cumulus, Stratocumulus
300
Who was the first to discover the water cycle?
Bernard Palissy (1580 CE)
300
What is relative humidity?
How much water IS in the air
400
What are some examples of natural pollution?
Volcanoes, pollen, and dust storms
400
About how far is the exosphere from the earth?
440 to 6,200 miles
400
What are clouds made of?
ice crystals
400
Why does water evaporate?
Water evaporates because the sun dries it up.
400
What is water vapor?
Water droplets
500
Why is there air pollution?
Air pollution is a man-made effect.Have you ever seen smoke billowing out of pipes? Air is polluted because of all the work factories do by producing smoke.